Hi to
Mal and
Jonesy,
I have a model 2058 ATCO, (20" 1958) that was gifted to me in original condition from the son of the original owner, complete with the receipt .....I contacted the Old Lawn Mower Club in England to get their ideas I whether I should restore it or leave in original condition and 'conserve' it.
I asked what product they use for this purpose and they replied
'Waxoyl'....Someone has said it was also recommended by the Hall & Duck Trust, who apparently use it on their machines.
I don't know if it is available in Australia...but I will do some research...someone however from
ODK may know, and post here.

Jonesy,

on an awesome score...(you lucky bugger!)
